How to install PIN-code SIM-Map in the phone Xiaomi: all the ways

Protection SIM-map PIN-code is a basic security measure that many Xiaomi users ignore until they encounter phone theft or unauthorized access, PIN-code SIM blocks access to the mobile network at the hardware level: without it it is impossible to make a call, send a message SMS Or use the mobile Internet, even if the attacker drops the phone to the factory settings, POCO and Mi with firmware MIUI 12-14, and consider the nuances that are not written in the official instructions.

It is important to understand that PIN-code SIM — It's not the same as the lock screen password, it's tied to the operator's physical card (MTS, Beeline, Tele2, MegaFon) and works even when you're rearranged. SIM If you've never set it up before, the default code is standard code (usually 0000 or 1234), which is easy to match, and we'll show you how to change it to a reliable one, and also what to do if you forget the combination and the phone requires you to use it. PUK-code.

Why put it up PIN-code SIM-Xiaomi?

Many users believe PIN-code SIM It is a useless function, but in practice it solves several critical problems:

• 🔒 Protection against theft: no PIN-The attacker will not be able to use your number for calls or SMS (even after dropping the phone).
• 📵 Blocking Unauthorized Access: If Someone Inserts Yours SIM In another phone, it will be locked.
• 💳 Protection against fraud: with blocked SIM It is impossible to confirm payments through SMS (for example, in banking applications).
• 🔄 Data security: when you lose your phone SIM-The card will not be a loophole for the recovery of accounts (for example, through the SMS-code).

But there are downsides to the feature, such as having to reboot your phone or retrieve the SIM, and some apps (like banking) may require you to turn off the PIN to work properly, but the security risks outweigh the inconveniences — especially if you store important data on your phone.

How do I know if it's on? PIN-code SIM Xiaomi

Before you set up the protection, check if the PIN is already activated.

1. Reboot your phone (hold the power button → Reboot).
2. After turning on, look at the lock screen: if a window with a request appears Enter PIN-code SIM, protection is active.
3. If there is no request, the PIN is disabled.

You can also check the status through the settings:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Check the lock point. SIM-cards – if the switch is switched off, PIN non-active.

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If you have two. SIM-maps, set up PIN Operators sometimes block cards for frequent input errors, even if it was the second one. SIM.

Step-by-step instructions: how to install PIN-code SIM Xiaomi

The procedure is the same for all Xiaomi models (including Redmi Note 12, POCO X5, Mi 11, etc.) and MIUI 12-14 versions. The main thing is to know the current PIN (by default it is 0000, 1111 or 1234).

Make sure that SIM-The card is active and catches the network

Know the current PIN (by default 0000 or 1234)

Connect your phone to charge (in case of lockdown)

Write down a new one. PIN on paper (do not keep it on your phone!)-->

Now we move on to the setting:

1. Open the settings (cog icon on the desktop).
2. Go to the SIM-cards and mobile networks section (in some firmware – Mobile Network).
3. Choose yours. SIM-map (if there are several, click on the desired one).
4. Slip on the block item SIM-Cards (or Set a Lock) PIN).
5. Turn the switch on in the on position.
6. Enter the current PIN (if requested).
7. Create and enter a new PIN (from 4 to 8 digits).
8. Confirm the new PIN by re-entering.
9. Press Ready or OK.

Once activated, the phone can request a restart, from now on, every time it is turned on or removed. SIM-The card will require input PIN.

How to change or disable PIN-code SIM Xiaomi

If you decide to change the PIN to a more reliable one or completely remove the protection, do it through the same settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Slip on the lock. SIM-map.
4. To change the PIN: Enter the current PIN. Enter the new PIN (2 times). Save the changes.
5. To disable PIN: Enter the current PIN. Transfer the switch to off. Confirm action.

Attention: if you turn it off PIN, Then turn it back on again, the system may require input. PUK-code (it is indicated on the plastic holder) SIM-card or in a contract with the operator).

What to do if you forgot PIN-code SIM Xiaomi

If you have entered three times incorrectly PIN, SIM-The card will be blocked and will require PUK-Personal Unblocking Key: This code is issued by the operator and is usually specified by the operator:

• 📄 On a plastic holder. SIM-maps (where the chip was cut out).
• 📑 In the contract or documents when purchasing SIM.
• 📧 V SMS or a letter from the operator upon activation.

If the PUK is lost, it can only be restored through the operator:

Important: If you enter incorrectly 10 times PUK, SIM-The card is locked forever and you'll have to change it in the operator's cabin!

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PUK-Code is not the same as PIN. It's only issued by the operator, and it's not stored on the phone, and if you lose it, you can only recover it through official channels.

Common Mistakes and How to Avoid Them

When setting up a PIN on SIM, Xiaomi users often face typical problems:

⚠️ Note: If you use two of these SIM-maps, set up PIN Sometimes the phone blocks both cards if you typed them incorrectly. PIN only for one.

• 🔢 Too simple. PIN: Avoid combinations like 1234 or 0000. Use 6-8 digits with a chaotic set (e.g., 742951).
• 📱 Storage PIN In your phone: Never save the code in notes or SMS. If the phone is stolen, the attacker will have access to the SIM.
• 🔄 Frequent reboots: if you reboot your phone frequently (for example, for tests), PIN It's going to be requested every time, so it's better to turn off the protection.
• 🚫 Ignoring PUK: if SIM blocked, do not try to enter PUK See the operator for the exact combination.

Another common mistake is the confusion between PIN SIM and the password from the Mi Account. These codes are not linked: PIN defender SIM-The card, and the password from Mi Account is cloud data and phone functions. If you forget your account password, you can restore it through account.xiaomi.com, but this will not help unlock the password from your account. SIM.

Features PIN-code on different Xiaomi models

In general, the PIN setup process is the same for all Xiaomi devices, but there are nuances depending on the model and version of MIUI:

On dual-SIM devices (like the Redmi Note 12 Pro+), you can configure different PINs for each card, and some models allow you to disable a PIN request when you reboot, but leave it when you retrieve the SIM (the setting is hidden in additional settings).

FAQ: Frequent questions about PIN-code-on SIM Xiaomi